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Overview
| Comment: | Make sure the outer loop cursor numbers are recorded in time for them to be used by the ORDER BY optimizer. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
351dc8d9cab8a222f28fb865d3a7d1c6 |
| User & Date: | drh 2012-10-02 01:25:16 |
Context
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2012-10-02
| ||
| 01:46 | Factor an invariant out the loop termination condition for the ORDER BY satisfied-by-index analyzer routine. check-in: 545bb336 user: drh tags: trunk | |
| 01:25 | Make sure the outer loop cursor numbers are recorded in time for them to be used by the ORDER BY optimizer. check-in: 351dc8d9 user: drh tags: trunk | |
| 01:10 | Improvements to the wheretrace output. check-in: 76b27765 user: drh tags: trunk | |
Changes
Changes to src/where.c.
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}
if( (bestPlan.plan.wsFlags & WHERE_DISTINCT)!=0 ){
assert( pWInfo->eDistinct==0 );
pWInfo->eDistinct = WHERE_DISTINCT_ORDERED;
}
andFlags &= bestPlan.plan.wsFlags;
pLevel->plan = bestPlan.plan;
testcase( bestPlan.plan.wsFlags & WHERE_INDEXED );
testcase( bestPlan.plan.wsFlags & WHERE_TEMP_INDEX );
if( bestPlan.plan.wsFlags & (WHERE_INDEXED|WHERE_TEMP_INDEX) ){
if( (wctrlFlags & WHERE_ONETABLE_ONLY)
&& (bestPlan.plan.wsFlags & WHERE_TEMP_INDEX)==0
){
pLevel->iIdxCur = iIdxCur;
................................................................................
for(ii=0, pLevel=pWInfo->a; ii<nTabList; ii++, pLevel++){
Table *pTab; /* Table to open */
int iDb; /* Index of database containing table/index */
struct SrcList_item *pTabItem;
pTabItem = &pTabList->a[pLevel->iFrom];
pTab = pTabItem->pTab;
pLevel->iTabCur = pTabItem->iCursor;
pWInfo->nRowOut *= pLevel->plan.nRow;
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
if( (pTab->tabFlags & TF_Ephemeral)!=0 || pTab->pSelect ){
/* Do nothing */
}else
#ifndef SQLITE_OMIT_VIRTUALTABLE
if( (pLevel->plan.wsFlags & WHERE_VIRTUALTABLE)!=0 ){
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}
if( (bestPlan.plan.wsFlags & WHERE_DISTINCT)!=0 ){
assert( pWInfo->eDistinct==0 );
pWInfo->eDistinct = WHERE_DISTINCT_ORDERED;
}
andFlags &= bestPlan.plan.wsFlags;
pLevel->plan = bestPlan.plan;
pLevel->iTabCur = pTabList->a[bestJ].iCursor;
testcase( bestPlan.plan.wsFlags & WHERE_INDEXED );
testcase( bestPlan.plan.wsFlags & WHERE_TEMP_INDEX );
if( bestPlan.plan.wsFlags & (WHERE_INDEXED|WHERE_TEMP_INDEX) ){
if( (wctrlFlags & WHERE_ONETABLE_ONLY)
&& (bestPlan.plan.wsFlags & WHERE_TEMP_INDEX)==0
){
pLevel->iIdxCur = iIdxCur;
................................................................................
for(ii=0, pLevel=pWInfo->a; ii<nTabList; ii++, pLevel++){
Table *pTab; /* Table to open */
int iDb; /* Index of database containing table/index */
struct SrcList_item *pTabItem;
pTabItem = &pTabList->a[pLevel->iFrom];
pTab = pTabItem->pTab;
pWInfo->nRowOut *= pLevel->plan.nRow;
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
if( (pTab->tabFlags & TF_Ephemeral)!=0 || pTab->pSelect ){
/* Do nothing */
}else
#ifndef SQLITE_OMIT_VIRTUALTABLE
if( (pLevel->plan.wsFlags & WHERE_VIRTUALTABLE)!=0 ){
|